Efficacy of Radiotherapy in Patients with Relapsing Primary Rosai-Dorfman Disease of the Nasal Cavity.

Rosai-Dorfman disease (RDD) is a rare proliferative disorder characterized by an overproduction of a type of immune cell called histiocytes, with unknown etiology. Although extranodal involvement is not uncommon, it is rarely seen within the nose. The available data are limited, and currently, there are no established guidelines for managing RDD.

Castleman disease as the great mimicker: the role of complex morpho-pathological evaluation.

Castleman disease (CD) is a group of lymphoproliferative disorders characterized by abnormal enlargement of lymph nodes (LNs) and a wide range of symptoms. Only a few cases are found in the head and neck. Based on clinical presentation and evolution, the disease can be classified into two main subtypes: unicentric CD (UCD), characterized by the enlargement of a single LN or a single LN chain, and multicentric CD (MCD), characterized by the involvement of multiple LNs and regions, with more important systemic symptoms and a poor prognosis.

Oculo-orbital complications of odontogenic sinusitis.

Odontogenic sinusitis is a well-known, but under-studied bacterial infection of the maxillary sinus that can extend to other sinuses, the orbit, or even the endocranium. We performed an observational retrospective study on the patients with odontogenic sinusitis treated in our hospital over a five-year period. We included patients over 18 years old diagnosed with odontogenic sinusitis and ocular complications and we excluded patients with ocular complications nonrelated to dental-originated sinusitis or patients with odontogenic sinusitis without orbital-ocular complications.